BIOL 1503 EXAM 3 QUESTIONS WITH VERIFIED
ANSWERS
Seed formation- Double fertilization - Answers - double fertilization creates endosperm
nucleus
endosperm nucleus divides, multi-nucleate
undergoes cytokinesis and becomes solid
provides nutrients to the embryo
morph into cotyledons
Seed formation - zygote - Answers - divides into:
Basal: produces suspensor, anchors embryo and transfers nutrients
Terminal: produces embryo, one or two cotyledons
Dicots - Answers - hypocotyl
radicle
two thick cotyledons (can be thin)
Monocots - Answers - single cotyledon ( scutellum)
coleoptile
coleorhiza
____ becomes root - Answers - radicle
______ becomes upper part of plant - Answers - hypocotyl, coleoptile
Seed coat - Answers - surrounds embryo and endosperm
derived from ovule
Pericarp - Answers - becomes the fruit
derived from ovary
Why does the embryo have a very low metabolic rate during dormancy? - Answers -
Helps ensure that seed geminates at a time and place most advantageous to the
seedling
Primary growth - Answers - increase in length
results in apical meristem
Secondary growth - Answers - increase in diameter
results in lateral meristem
Function of roots - Answers - Store nutrients
, anchor the plant
absorb minerals and water
transport liquids
produce new tissue
Function of stems - Answers - Store nutrients
transport liquids
produce new tissues
elevate leaves and flowers
Function of leaves - Answers - photosynthesis
How do plants get taller? - Answers - Primary growth
occurs in meristems (roots and shoots)
What are the names of the different vascular tissues? - Answers - Xylem and Phloem
How do plants get larger in diameter? - Answers - secondary growth
Vascular cambium produces new xylem and phloem
Cork cambium produces a tough outer covering that replaces the epidermis
Produces new xylem cells on the inside and phloem cells on the outside
What is bark made up of? - Answers - phloem
cork cambium
cork
Where is the youngest xylem located? - Answers - just inside the vascular cambium
Where is the oldest xylem located? - Answers - in the center of the tree
where is the youngest phloem located? - Answers - just outside of the vascular
cambium
where is the oldest phloem located? - Answers - in the bark of the tree
Animal Development - Answers - Fertilization
Cleavage
Morphogenesis
Organogenesis
Fertilization - Answers - Nonspecific attachment of sperm to the outer coating of the egg
acrosomal reaction and strong binding of the sperm to the egg
egg activation
fusion of haploid nuclei into diploid nucleus
What does egg activation do? - Answers - activates a sharp rise in metabolic processes
ANSWERS
Seed formation- Double fertilization - Answers - double fertilization creates endosperm
nucleus
endosperm nucleus divides, multi-nucleate
undergoes cytokinesis and becomes solid
provides nutrients to the embryo
morph into cotyledons
Seed formation - zygote - Answers - divides into:
Basal: produces suspensor, anchors embryo and transfers nutrients
Terminal: produces embryo, one or two cotyledons
Dicots - Answers - hypocotyl
radicle
two thick cotyledons (can be thin)
Monocots - Answers - single cotyledon ( scutellum)
coleoptile
coleorhiza
____ becomes root - Answers - radicle
______ becomes upper part of plant - Answers - hypocotyl, coleoptile
Seed coat - Answers - surrounds embryo and endosperm
derived from ovule
Pericarp - Answers - becomes the fruit
derived from ovary
Why does the embryo have a very low metabolic rate during dormancy? - Answers -
Helps ensure that seed geminates at a time and place most advantageous to the
seedling
Primary growth - Answers - increase in length
results in apical meristem
Secondary growth - Answers - increase in diameter
results in lateral meristem
Function of roots - Answers - Store nutrients
, anchor the plant
absorb minerals and water
transport liquids
produce new tissue
Function of stems - Answers - Store nutrients
transport liquids
produce new tissues
elevate leaves and flowers
Function of leaves - Answers - photosynthesis
How do plants get taller? - Answers - Primary growth
occurs in meristems (roots and shoots)
What are the names of the different vascular tissues? - Answers - Xylem and Phloem
How do plants get larger in diameter? - Answers - secondary growth
Vascular cambium produces new xylem and phloem
Cork cambium produces a tough outer covering that replaces the epidermis
Produces new xylem cells on the inside and phloem cells on the outside
What is bark made up of? - Answers - phloem
cork cambium
cork
Where is the youngest xylem located? - Answers - just inside the vascular cambium
Where is the oldest xylem located? - Answers - in the center of the tree
where is the youngest phloem located? - Answers - just outside of the vascular
cambium
where is the oldest phloem located? - Answers - in the bark of the tree
Animal Development - Answers - Fertilization
Cleavage
Morphogenesis
Organogenesis
Fertilization - Answers - Nonspecific attachment of sperm to the outer coating of the egg
acrosomal reaction and strong binding of the sperm to the egg
egg activation
fusion of haploid nuclei into diploid nucleus
What does egg activation do? - Answers - activates a sharp rise in metabolic processes
